Daraga, Bicol Region, Philippines is a pretty good spot for solar energy production all year round. This is because it's located in the tropics where sunlight is consistent throughout most of the year. The seasons in this region are more often characterized by wet and dry periods rather than drastic temperature changes.
The amount of electricity that can be produced from each kilowatt (kW) of installed solar panels varies with the seasons but remains relatively high throughout the year: In summer, you can expect about 5.60 kWh per day, autumn yields around 4.74 kWh/day, winter gives approximately 4.08 kWh/day and spring offers an impressive 6.25 kWh/day.
Spring seems to be the best time for generating solar power at this location due to its higher daily output compared to other seasons while winter appears to be less ideal due to lower daily output.
For fixed panel installations at this location, tilting panels at an angle of 11 degrees towards South would maximize total yearly production from your solar photovoltaic (PV) system as it aligns better with sun's path across sky.
However, there could potentially be some local factors that might hinder optimal energy production from your solar PV system such as heavy rainfall during wet season or dust accumulation on panels which could obstruct sunlight penetration and reduce efficiency. It’s also important to consider any potential shading issues caused by nearby structures or vegetation which could block direct sunlight onto panels especially during morning and late afternoon hours when sun is low in sky.
To prevent these issues impacting your energy production significantly:
1) Regular cleaning & maintenance of panels should be carried out especially after heavy rainfalls or dusty conditions.
2) If possible, choose a site for installation that has minimal obstructions blocking direct sunlight onto panels.
3) Consider installing additional protective measures like weather-resistant coatings on panel surfaces if necessary based on local climate conditions.
4) Monitor performance regularly so any dips in efficiency can quickly be addressed.
In summary, while there may be some challenges to consider, Daraga, Bicol Region, Philippines is a great location for solar energy production with consistent sunlight throughout the year and high potential output.
Note: The Tropics are located between 23.5° North and -23.5° South of the equator.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 268 locations across Philippines. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Philippines by location
Solar output per kW of installed solar PV by season in Daraga
Seasonal solar PV output for Latitude: 13.1545, Longitude: 123.7147 (Daraga, Philippines), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
 
Ideally tilt fixed solar panels 11° South in Daraga, Philippines
To maximize your solar PV system's energy output in Daraga, Philippines (Lat/Long 13.1545, 123.7147) throughout the year, you should tilt your panels at an angle of 11° South for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Daraga, Philippines
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Daraga, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 11° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 3° North in Summer | 19° South in Autumn | 28° South in Winter | 6° South in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Daraga, Philippines
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Daraga, Philippines.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Daraga, Philippines
Daraga, Philippines is located in the province of Albay, in the Bicol Region of Luzon Island. The topography around this area is a mixture of flatlands and hilly terrains. It's also known for its volcanic landscapes as it's near Mayon Volcano, one of the most active volcanoes in the country.
The region receives a significant amount of sunlight throughout the year which makes it suitable for solar power generation. However, identifying specific areas suited for large-scale solar PV would require considering several factors beyond just topography and sunlight availability.
1) Flat Areas: Large-scale solar PV installations typically require large tracts of relatively flat land. In Daraga, these could be lowland areas or plateaus that are not used for agriculture or any other purposes.
2) Proximity to Power Grid: Areas close to existing power grids would be ideal since this reduces costs and complexities related to power transmission.
3) Minimal Environmental Impact: Locations where installation will have minimal impact on local ecosystems should be preferred.
4) Away from Residential Areas: To avoid possible complaints about visual pollution or land use disputes, locations somewhat distant from dense residential zones may be more suitable.
Detailed site surveys would need to be conducted to identify specific sites meeting these criteria. Additionally, regulatory approvals and community acceptance are key considerations when planning such projects.
Philippines solar PV Stats as a country
Philippines ranks 40th in the world for cumulative solar PV capacity, with 1,370 total MW's of solar PV installed. Each year Philippines is generating 13 Watts from solar PV per capita (Philippines ranks 71st in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Philippines?
Yes, there are several incentives for businesses wanting to install solar energy in the Philippines. These include:
1. The Feed-in Tariff (FiT) program, which provides a guaranteed rate of return on investments in renewable energy projects;
2. Tax credits and exemptions from certain taxes;
3. Net metering programs that allow businesses to sell excess electricity back to the grid;
4. Grants and loans from government agencies such as the Department of Energy and the Philippine Solar Power Alliance;
5. Technical assistance from organizations like USAID’s Clean Energy Program; and
6. Access to financing through banks, venture capital firms, or other sources of private capital.
Do you have more up to date information than this on incentives towards solar PV projects in Philippines? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 25th of May 2024
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.




